I'm still confused. >.<
I'm less confused if this is what you meant, Praline.
I myself made only one Digimon akin to that, called CastleGreymon. It's basically just Greymon with a castle Lego piece(the ones used to create the top of towers) on it. This was before GeoGreymon(who admittedly is kind of that in a sense, albeit not the same kind of helmet) was revealed too. XD
That said, I think a line going into Puppetmon would be neat. It's just too bad there aren't enough Puppet types to go into officially(as in a possible line via the games/anime). Omekamon makes a good Champion, and for Ultimate, well, more than one Puppet choice. Either version of Monzaemon works well enough. Albeit, since we've seen quite a few Digimon with the only difference being their attribute(Vaccine, Virus, or Data), I could easily see a Vaccine version of Puppetmon working. We've seen a heroic one overall in Season 6(Xros Wars, Fusion), after all.